Results 18 years after planting loblolly pines at different spacings

Abstract

In 1939 a test of four spacings in planting loblolly pine seedlings was begun in an abandoned field on Maryland's Eastern Shore. The spacings were 4, 5.7, 8, and 11.3 feet between trees; each spacing was replicated on four 100-footsquare plots. In the 4- and 8-foot spacings, rows and trees within rows were 4 or 8 feet apart, with trees opposite in adjoining rows. In the other two spacings, trees in adjoining rows were staggered. .Trees 8 feet apart staggered in rows 4 feet apart gave the 5.7-foot spacing; trees 16 feet apart in rows 8 feet apart gave the 11.3-foot spacing.

Citation

Little, S.; Somes, H. A. 1958. Results 18 years after planting loblolly pines at different spacings. Forest Research Note NE-80. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 1-3